Moreno, D.S. 1972 Location of the site of production of the sex pheromone in the yellow scale and the California red scale.. Annals of the Entomological Society of America 65: 1283-1286.

Notes: Fragmented parts and cryostatic sections of Aonidiella citrina and aurantii presented to males of the respective sp.; pygidium of both females was the attractive area; bioassays of dissected pygidial glands showed that these glands were site of pheromone production.